ReSharper Web Help

Navigate To Extension Methods

This Navigate To command navigates from a text editor position to
available extension methods for the current class.

It becomes available when you invoke the Navigate To drop-down list at
class declaration or at class reference.

Place the caret at double type and click Extension Methods.
If there are any extension methods for the chosen type, all of them will be displayed in the list.
Choose one of them and
click to navigate to its declaration.